Did you use Canon toner? Printer makers are in a battle with people who make their own toner. Canon may have figured out a way of disabling your off branded toner. May even be why you changed your toner. Forgive me if I'm wrong, not much to go on here.
Just check you removed all the packaging tape from the toner and nothing is obscuring the chip.
Jul 26, 2012 - Uploaded by Internet-Ink
This video from Internet-ink.co.uk will instruct you on how to cancel the 5B00 error on the Canon MX series ...
May 20, 2014 - The Canon printers are known to be one of the best printers on the market, recently with the adoption of the Continuous Ink System on several models, these Canon printers have more error message appearing. Today we are going to talk about the 5B00 error message and how to eliminate this error.
Please be advised that Canon shall not be liable for any malfunction or trouble caused by continuation of printing under the ink out condition. Note .... If the error is not resolved, connect the machine to the computer and align the Print Head on the printer driver. ... For example: 5B00, 6800, B200, 5700, etc. 5100 is displayed:.
https://www.justanswer.com > Computer Repair Questions > Printer Troubleshooting
Jul 29, 2015 - The ink absorber is a series of pads/tanks, which catch drips from the printhead when parked, and is also used for maintenance tasks like cleaning and purging.Eventually this absorber fills up, and the printer shuts down operations, as continuing to operate it can result in ink overflowing the system, ...
Error Message 5B00 from my Canon PIXMA MX420 Printer Google Search
1.If you are using the multi-purpose tray, close it.
2.Open the front cover while pressing the open button.
3.Remove the toner cartridge.
Immediately place the removed toner cartridge into the original protective bag or wrap it with a thick cloth.
4.Holding the green tab (A), tilt the transport guide toward you.Do not take your hands off the transport guide until it moves back to its original position in Sep 6.
5.Remove the paper by pulling it gently.
Remove the jammed paper as horizontally as possible to prevent unfixed toner from spilling.
6.Move the transport guide back to its original position slowly.
7.Install the toner cartridge.
Push the toner cartridge into the printer firmly until it touches the back of the printer while aligning (A) on both sides of the toner cartridge with the toner cartridge guides inside the printer.
8.Close the front cover.
. .Could be it's a blocked or damaged print head.
Failing that try to open the machine then plug in and as the heads moved close the lid after that it worked.Or try turing off machine, Open the printer like you will be inserting ink cartridges, turn on printer, when the cartridge/printhead unit starts to move, close the printer. When I did it it did a self check for 3 to 4 minutes and when it was done it was ready to print.
Don't know if it will be a permanent fix as I don't know why it suddenly stopped working, but it is working now.
Try removing ink cartridge and see if the error goes away. If it does, you have a bad cartridge. Sometimes that happens to new cartridges as well. When your printer shows a b200 error, the ink carrier will not move, so you have to gently move it to where you access cartridge to remove it. This is for all canon printers that have a 2 cartridge ink system. For printers with a removable printhead, see solution below: